Norway's WW2 railway sabotage plot

Summary

Podcast Summary: Witness History – "Norway's WW2 Railway Sabotage Plot"

Host: Lars Bavanger
Guest/Witness: Gunnar Deynbol Jensen
Episode Date: May 5, 2026
Main Theme:
A vivid eyewitness account of a daring Norwegian resistance sabotage against Nazi Germany in 1942, which aimed to cripple the German war machine by destroying a key railway transformer. The episode explores family heroism, perilous escapes, and the long-lasting consequences faced by those involved.

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Episode Overview

Lars Bavanger takes listeners back to early May 1942, into a Norwegian village near Trondheim, under Nazi occupation. Through the eyes of Gunnar Deynbol Jensen—whose family was instrumental in the sabotage—the story examines one of the most crucial Allied sabotage operations in wartime Norway. The episode highlights courage, ingenuity, sacrifice, and the complicated aftermath faced by resistance families.

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Key Discussion Points & Insights

The Vital Sabotage Target

• [01:14] Gunnar introduces his family's central role, notably his uncle (Lt. Petter Denbol), mother (Lita), and grandfather (Petter Senior), in targeting the mine’s transformer to stop German extraction of copper and sulphur.
• Importance of the target: The mine supplied 25% of the sulphur for the German war effort:
  • “This was ranked as number one. It was the most important target for the Allies. It represented 25% of the sulphur the Germans could get hold on. And that's a lot of explosives and bombs and bullets that could have killed the Allies.” — Gunnar Deynbol Jensen [01:44]

The Night of the Sabotage

• [02:24] Lt. Petter leads a team of seven saboteurs, each assigned specific roles. The transformer was heavily guarded, with 200 German soldiers nearby.
• [03:14] Only three saboteurs manage to slip inside, neutralizing the single Norwegian guard before setting explosives:
  • “They knocked him down and gagged him. Yeah. And they put a thousand kroner in his pocket as a compensation.” — Gunnar [03:34]
• Lt. Petter personally sets the timed charge but encounters a near-lethal delay:
  • “He waited for the blast to go off and nothing happened... When he almost got to the door, it all exploded. So he was thrown to the ground.” — Gunnar [04:08]
• The ensuing escape is harrowing: Petter barely evades capture, at times hiding over a cliff’s edge as German soldiers nearly discover him:
  • “At one point he was hanging over a rock cliff and they stepped on his fingers, so close but still didn't find him.” — Gunnar [04:38]

Resources and Risks for the Resistance

• [05:00] The saboteurs scatter—some fleeing by bicycle to Trondheim, others across mountains to Sweden.
• The family takes elaborate precautions to deflect suspicion:
  • “They left some artifacts, like coins, indications that there had been British troops there who were responsible for the sabotage.” — Gunnar [05:17]
  • The aim was to avoid German reprisals against local civilians.

Ongoing Resistance and Community Role

• After repairs, more sabotage ensues—this time targeting ships and locomotives:
  • “The locals came with food. My mother came with information, intelligence... She helped with explosives transport and of the guns. Nobody suspected a young sweet girl, 16, 17.” — Gunnar [05:58]
• Growing suspicion forces the Danebol family to plan their escape. They receive a warning from the local sheriff and flee to Sweden, then to London to contribute to the Norwegian government-in-exile. [06:24-06:52]

Aftermath and Legacy

• [07:48] Post-liberation, Gunnar’s family returns to Norway alongside the King and exiled government. However, reintegration is fraught:
  • “He was yelled at for having hurt the company Urkla. He was sacked.” — Gunnar, on his grandfather’s return to his mining job [07:48]
• The episode closes with the eventual recognition for their sacrifice:
  • In 2003, at a ceremony attended by the company and Norwegian army, a bust of Lt. Petter Denebol was unveiled, accompanied by an apology decades later:
    • “That was the first time we as a family got an apology from Orkla.” — Gunnar [08:45]

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Notable Quotes & Memorable Moments

• “At one point he was hanging over a rock cliff and they stepped on his fingers, so close but still didn't find him.” — Gunnar [04:38]
• “Nobody suspected a young sweet girl, 16, 17. And she could pass the German guards without being noticed.” — Gunnar (about his mother) [05:58]
• “They left some artifacts, like coins, indications that there had been British troops there...” — Gunnar [05:17]
• “He was yelled at for having hurt the company Urkla. He was sacked.” — Gunnar (on the postwar treatment of his grandfather) [07:48]
• “That was the first time we as a family got an apology from Orkla… which was very good to be part of for my mother, for my family and for me.” — Gunnar [08:45]

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Important Timestamps

• 00:58 – 01:44: Introduction of the Danebol family’s role and importance of the mine
• 02:24 – 04:08: Details of the sabotage night and narrow escape
• 05:00 – 05:36: Aftermath, cover-up strategies, and renewed sabotage efforts
• 05:58 – 06:52: Community support and the family’s flight to Sweden/London
• 07:48 – 08:45: Return to Norway, postwar difficulties, and eventual recognition

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Conclusion

This episode offers a gripping, personal account of wartime sabotage that reveals not just acts of bravery, but also the high personal costs and complicated legacies of resistance. The firsthand testimony from Gunnar Deynbol Jensen adds emotional power to a little-known chapter in World War II, showing how family, community, and moral complexity shaped Norway’s fight against occupation.

Transcript

[A]

Hello, this is the Witness History podcast from the BBC World Service. I'm Lars Bavanger. We take you back to fascinating moments in history by hearing from one key witness. New episodes come out every weekday and are just nine minutes long. If you like the sound of that, make sure to subscribe and turn on your push notifications so you never miss a show. Today I'm taking you back to the early hours of 5 May 1942 and a Norwegian village near Trondheim. The country's been under Nazi German occupation for two years. Now a team of Norwegian resistance fighters are about to carry out what the Allied forces see as the top priority sabotage operation in Norway at this stage of the war. One local family with will become central to the action.

[B]

The first sabotage was planned by my grandfather because he was an electrical engineer. He was responsible for the maintenance of all the electrical equipment for everything around the mining industry.

[A]

Up there, that's Gunnar Deynbol Jensen. He grew up hearing how his uncle, Lt. Peter Denbol, his mother Lita, and his grandfather Petter Senior. It all became instrumental in trying to stop the Germans from extracting copper and sulphur from a mine near their village of Ogangir and shipping it to Germany. Both minerals were needed in weapons production. The Norwegian government in exile and its British allies were in no doubt what needed to be done.

[B]

This was ranked as number one. It was most important target for the allies. It represented 25% of the sulphur the Germans could get hold on. And that's a lot of explosives and bombs and bullets that could have killed the Allies.

[A]

Electric trains carried the sulphur from the mine down to the harbour in Oitganger on this early May morning in 1942. To halt that transport, the saboteurs set out to blow up the heavily guarded transformer that secured the train line's electricity supply. Gunnar's uncle Petter led the operation.

[B]

It was located near the harbour down at the end of Orkhange, and he knew the area well. I've been there as a kid myself. It's an intense humming sound in the transformer. They were seven in all. Saboteurs. They had different tasks. Some watched the guards and a couple of them went in.

[A]

Lt. Danebol's team were under immense pressure. Not only was the operation very dangerous if they failed, Allied aircraft would carpet bomb the valley and village to end the German transport.

[B]

And that would have killed a lot of people because it wasn't a precision bombing.

[A]

At the time, the area near the transformer station was heavily guarded. Some 200 German soldiers were stationed within 250 meters of it. A smaller team of three managed to sneak past. And they only had one local Norwegian guard to deal with inside the station itself.

[B]

They knocked him down and gagged him. Yeah. And they put a thousand kroner in his pocket as a compensation. Uncle Petter that led the sabotage. He sent the others away. He was going to set off the blast.

[A]

Lt. Petter Danebal used a timing device to give him a 20 minute head start to escape from the transformer station before the explosives went off. But the device took longer than expected.

[B]

And he waited for the blast to go off and nothing happened. And there were guards there, you know, he had to crawl back. When he almost got to the door, it all exploded. So he was thrown to the ground. And he started running when he could get on his feet again and he ran up steep hills. He had played the hide and seek up there as a. He had the Germans right behind him. And at one point he was hanging over a rock cliff and they stepped on his fingers so close but still didn't find him. And he was dodging them up there for seven hours. And he fled over the mountains to Sweden.

[A]

Meanwhile, the rest of the team had managed to flee on bicycles towards Trondheim. While running for his life. Gunnar's uncle Petter also also knew that if the German soldiers caught him, his own family and other locals who had been helping behind the scenes were at risk.

[B]

They left some artifacts, like coins, indications that there had been British troops there who were responsible for the sabotage. Because they knew that the Germans would hit back on the local civil population to deter further sabotage.

[A]

Blowing up the electricity supply put a stop to the trains for a while. When the Germans repaired it and resumed the shipment of sulphur, Lieutenant Petter Denbol and his team planned and executed further attacks on a boat in the harbour and on the train's locomotives. All the while they were supported by locals, including Danebol's own family.

[B]

And the locals came with food. My mother came with information, intelligence. She helped with the explosives transport of that and of the guns. Nobody suspected a young sweet girl, 16, 17. And she could pass the German guards without being noticed.

[A]

Yet suspicion grew around the Dane Ball family.

[B]

They realized that there was talk in the town that maybe Danebol family was involved in these sabotages. So they were always had prepared escape kit with the necessary things to escape. And they had planned a route for escape. In the end they got a notification from the local sheriff that the Germans were onto them. They had to get away.

[A]

Gunnar's mother and grandfather skied over the mountains to neutral Sweden. From there they travelled to London, where both ended up assisting the exiled Norwegian government. Meanwhile, the saboteurs had finally managed to blow up all but one locomotive on the train line from the mine to the harbour. The German export of copper and sulphur came close to total collapse. For the Danebol family it was not all Good news, however. Lt. Petter Dayneball perished in a plane crash over the North Sea shortly before the final operation. On 7 May 1945, the government and royal family returned to liberated Norway. Crowds lined the streets singing the national anthem as heard in this radio clip kept by the Norwegian National Library. Gunnar's family also headed home, but for them the celebrations would not last well.

[B]

They returned to Norway with the Norwegian exile government and the King on his ship in through the Oslofjord. And then they took off to their home further north in Norway, in Oskarne. When they arrived there, my grandfather went to his former boss and said, I'll take up my work again. He was yelled at for having hurt the company Urkla. He was sacked.

[A]

The mining company had been dependent on the German market even before the war and increased production of sulphur and copper during the occupation. In 2003, at a ceremony attended by representatives from the Orkla company, a bust of Lt. Petter Denebol was unveiled near where the first sabotage took place.

[B]

That was the first time we as a family got an apology from Orkla. The Norwegian army was also present, which was very good to be part of for my mother, for my family and for me.

[A]

Gunnar Deynborg Jensen was talking to me. Lars Bewanger for the Witness History podcast from the BBC World Service. I hope you enjoyed listening and if you want to hear more stories from World War II, we have plenty in our back catalogue and hit subscribe so you never miss out. Bye for now.